What is the molar mass of SO_2?

• A. 64.07 g/mol
• B. 32.07 g/mol
• C. 48.07 g/mol
• D. 80.07 g/mol

Answer: (A)

Verified step by step guidance

1. Identify the elements present in the compound SO_2, which are sulfur (S) and oxygen (O).
2. Determine the number of atoms of each element in the formula: 1 sulfur atom and 2 oxygen atoms.
3. Find the atomic masses of each element from the periodic table: sulfur (S) has an atomic mass of approximately 32.07 g/mol, and oxygen (O) has an atomic mass of approximately 16.00 g/mol.
4. Calculate the total mass contributed by each element by multiplying the atomic mass by the number of atoms: for sulfur, multiply 32.07 g/mol by 1; for oxygen, multiply 16.00 g/mol by 2.
5. Add the total masses of sulfur and oxygen to find the molar mass of SO_2 using the formula: \(\text{Molar mass of SO}_2 = (1 \times 32.07) + (2 \times 16.00)\) g/mol.